Nodejs Utililty Methods String Sub String

String.prototype.substrings = function() {
  var substrings = []
  for (var i1 = 0; i1 < this.length; i1++) {
    for (var i2 = i1; i2 < this.length; i2++) {
      substrings.push(this.substr(i1, i2 + 1));
  return substrings;
console.log("abc".substrings());

String.prototype.substrings = function () {
  let substrings = [];
  let chars = this.split('');
  for (let i = 0; i <= chars.length; i++) {
    for (let j = i + 1; j <= chars.length; j++) {
      let substring = chars.slice(i, j);
      substrings.push(substring.join(''));
  return substrings;
};

String.prototype.substrings = function () {
  let substrings = [];
  for (let start = 0; start < this.length; start++) {
    for (let len = 1; (start + len) <= this.length; len++) {
      substrings.push(this.slice(start, start + len));
  return substrings;
};
...

String.prototype.substrings = function () {
  var substrings = [];
  for (var i = 0; i < this.length; i++) {
    for (var j = i + 1; j <= this.length; j++) {
      var sub = this.slice(i,j);
      if (substrings.indexOf(sub) === -1 ) {
        substrings.push(sub);
  return substrings;
};
console.log("cat".substrings());

String.prototype.substrings = function () {
  results = []
  for (i = 0; i < this.length; i++ ) {
    for (j = i + 1; j <= this.length; j++ ) {
      var cur_substr = this.substring(i, j);
      var includes = false;
      for (k = 0; k < results.length; k++ ) {
        if (results[k] === cur_substr) {
          includes = true;
...

String.prototype.substrings = function() {
  var substrings = [];
  for (var i = 0; i < this.length; i++){
    for (var j = i; j < this.length; j++){
      substrings.push(this.slice(i,j+1));
    };
  };
  return substrings;
console.log(("cat").substrings());

String.prototype.substrings = function () {
  let array = [];
  for(let i=0; i < this.length; i++) {
    for(let j=i + 1; j <= this.length; j++) {
      if (!array.includes(this.slice(i,j))) {
        array.push(this.slice(i,j));
  return array;
};
console.log([7,6,5,4,1,3,6].bubbleSort());
console.log("cat".substrings());

String.prototype.substrings = function () {
  let letterArr = this.split("");
  let outArr = [];
  for (let i = 0; i < letterArr.length; i++) {
    for (let j = i + 1; j <= letterArr.length; j++){
      let subword = letterArr.slice(i,j).join("");
      if (!outArr.includes(subword)) {
        outArr.push(subword);
  return outArr;
};
console.log("cat".substrings());

String.prototype.substrings = function(min,max) {
  var ret = [], shrinkingMax;
  min = [min || 1, 1].max();
  max = [max || this.length,this.length].min();
  for (var cursorStart=0,l=this.length; cursorStart<l; cursorStart++) {
    shrinkingMax = [max,this.length - cursorStart].min();
    for (var substrLen=min; substrLen<=shrinkingMax; substrLen++ ) {
      var cursorEnd = substrLen + cursorStart;
      ret.push(this.substring(cursorStart,cursorEnd));
...